Highly Emissive Divalent-Ion-Doped Colloidal CsPb_1-xM_xBr₃ Perovskite Nanocrystals through Cation Exchange.

ABSTRACT: Colloidal CsPbX₃ (X = Br, Cl, and I) perovskite nanocrystals (NCs) have emerged as promising phosphors and solar cell materials due to their remarkable optoelectronic properties. These properties can be tailored by not only controlling the size and shape of the NCs but also postsynthetic composition tuning through topotactic anion exchange. In contrast, property control by cation exchange is still underdeveloped for colloidal CsPbX₃ NCs. Here, we present a method that allows partial cation exchange in colloidal CsPbBr₃ NCs, whereby Pb²⁺ is exchanged for several isovalent cations, resulting in doped CsPb_1-xM_xBr₃ NCs (M= Sn²⁺, Cd²⁺, and Zn²⁺; 0 < x ≤ 0.1), with preservation of the or

SUBMITTER: van der Stam W 

PROVIDER: S-EPMC5364419 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature